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Because collecting information from the whole population may not be possible, may take too long or may be very expensive. Furthermore, if a sample is well designed, the improvement in accuracy of the results will diminish rapidly so there is little to be gained from collecting all the data.
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Earn +20 ptsQ: Why are sample used in statistics?
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Continue Learning about Statistics
What is a numerical value used as a summary measure for a sample called such as a sample mean?
sampl statistics
When can statistics be used to gain information about a population from a sample?
When the sample - whether it is random or systematic - is somehow representative of the population.
The constant rate used as a gauge in calculating the valid sample size?
statistics
Techniques used to determine something about a population based on a sample?
Inferential statistics
Three reasons why samples are used in statistics?
There are a few reasons why samples are used in statistics. One reason is that the whole population cannot be used and a sample is a good representation of the whole.
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